st: FORTRAN 77's GO TO <label> CONTINUE into Mata

A question about translating the following snippet of FORTRAN 77 into Mata:
DO 120 J=1,NCV
. . .
IF (SM) 100,120,100
100 SM=SM*B
. . .
120 CONTINUE
I currently have the following (perhaps-too-literal) translation:
for (j=1; j<=ncv; j++) {
. . .
if (!sm) goto L120
sm = sm * b
. . .
L120: }
But in an aside exploration of Mata's behavior with an analogous probe
function, it seems that when a -goto- sends control to the continuation line
as above, it behaves like a -break- and not a -continue-. Is it that I'm
misremembering things FORTRAN? (The algorithm is still a little
difficult to follow at the moment, so the intention isn't obvious from the
context.)
Can someone with a more trustworthy memory clue me in, and recommend one of
the following as the replacement--or maybe suggest something better still?
A:
for (j=1; j<=ncv; j++) {
. . .
if (!sm) continue
sm = sm * b
. . .
}
B:
for (j=1; j<=ncv; j++) {
. . .
if (!sm) break
sm = sm * b
. . .
}
Joseph Coveney
www.stat.columbia.edu/~cook/movabletype/archives/2007/08/they_started_me.html
"In the case of Mata. goto? Really? In 2007? You sure about that?"
--Byron Ellis
http://kerneltrap.org/node/553/2131
"No, you've been brainwashed by CS people who thought that Niklaus Wirth
actually knew what he was talking about. He didn't. He doesn't have a
frigging clue."
--Linus [Torvalds]
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